||You must fix all errors; for details on how to fix them, see
However, instead of fixing a particular error, it's sometimes
OK to add a line to the lint.whitelist file in the root of the
web-platform-tests directory to make the lint tool ignore it.
For example, to make the lint tool ignore all '%s'
errors in the %s file,
you could add the following line to the lint.whitelist file.
||Ensure that there is a `<link rel="help" href="[url]">` for the spec.
`MISSING-LINK` is designed to ensure that the CSS build tool can find
the tests. Note that the CSS build system is primarily used by
[test.csswg.org/](http://test.csswg.org/), which doesn't use
`wptserve`, so `*.any.js` and similar tests won't work there; stick
with the `.html` equivalent.